Comparing ending merchandise inventory, cost of goods sold, and gross profit using the periodic inventory system---FIFO, LIFO, and Weighted-Average methods

Assume the Mesquite Coffee Shop competed the following periodic inventory transactions for a line of merchandise inventory:

Jun. 1	Beginning merchandise inventory	20 units @ $20 each
12 purchase	Purchase	6 units @ $22 each
20	Sale	14 units @ $35 each
24	Purchase	16 units @ $24 each
29	Sale	20 units @ $35 each

Requirements

Compute ending merchandise inventory, cost of goods sold and gross profit using the FIFO inventory costing method

Compute ending merchandise inventory, cost of goods sold, and gross profit using the LIFO inventory costing method.

Compute ending merchandise inventory, cost of goods sold, and gross profit using the weighted-average inventory costing method. (Round weighted average cost per unit to the nearest cent and all other amounts to the nearest dollar.)